ipwatchd-gnotify: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/ipwatchd-gnotify - from package: ipwatchd-gnotify

You may install the required package with command apt-get install {package}

Error in other languages:
ipwatchd-gnotify: bevel nie gevind nie
ipwatchd-gnotify: comandă negăsită
ipwatchd-gnotify: comando não encontrado
ipwatchd-gnotify: commande introuvable
ipwatchd-gnotify: command not found
ipwatchd-gnotify: käsku ei ole
ipwatchd-gnotify: không tìm thấy lệnh
ipwatchd-gnotify: komanda nerasta
ipwatchd-gnotify: Kommando nicht gefunden.
ipwatchd-gnotify: kommandot finns inte
ipwatchd-gnotify: komut yok
ipwatchd-gnotify: nie znaleziono polecenia
ipwatchd-gnotify: níor aimsíodh an t-ordú
ipwatchd-gnotify: no se encontró la orden
ipwatchd-gnotify: no s'ha trobat l'ordre
ipwatchd-gnotify: opdracht niet gevonden
ipwatchd-gnotify: parancs nem található
ipwatchd-gnotify: perintah tidak ditemukan
ipwatchd-gnotify: príkaz nenájdený
ipwatchd-gnotify: příkaz nenalezen
ipwatchd-gnotify: команда не найдена
ipwatchd-gnotify: командата не е открита
ipwatchd-gnotify: 命令找不到
ipwatchd-gnotify: コマンドが見つかりません